vigilant [vɪ̱ʤɪlənt] ADJ-GRADED Someone who is vigilant gives | English classroom

vigilant
[vɪ̱ʤɪlənt]
ADJ-GRADED
Someone who is vigilant gives careful attention to a particular problem or situation and concentrates on noticing any danger or trouble that there might be.
He warned the public to be vigilant and report anything suspicious...
All but one of these letter bombs had been intercepted by vigilant post office staff.
Syn:
watchful
Derived words:
vigilance N-UNCOUNT Drugs are a problem that requires constant vigilance.